Gold-Rhodium Nanoflowers for the Plasmon-Enhanced Hydrogen Evolution Reaction under Visible Light

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de Souza Rodrigues , M P , Dourado , A H B , Cutolo , L D O , Parreira , L S , Alves , T V , Slater , T J A , Haigh , S J , Camargo , P H C & Cordoba de Torresi , S I 2021 , ' Gold-Rhodium Nanoflowers for the Plasmon-Enhanced Hydrogen Evolution Reaction under Visible Light ' , ACS catalysis , vol. 11 , no. 21 , pp. 13543-13555 . https://doi.org/10.1021/acscatal.1c02938

Title: Gold-Rhodium Nanoflowers for the Plasmon-Enhanced Hydrogen Evolution Reaction under Visible Light
Author: de Souza Rodrigues, Maria Paula; Dourado, Andre H. B.; Cutolo, Leonardo de O.; Parreira, Luanna S.; Alves, Tiago Vinicius; Slater, Thomas J. A.; Haigh, Sarah J.; Camargo, Pedro H. C.; Cordoba de Torresi, Susana Ines
Contributor organization: Department of Chemistry
Helsinki Institute of Sustainability Science (HELSUS)
Date: 2021-11-05
Language: eng
Number of pages: 13
Belongs to series: ACS catalysis
ISSN: 2155-5435
DOI: https://doi.org/10.1021/acscatal.1c02938
URI: http://hdl.handle.net/10138/337023
Abstract: State of the art electrocatalysts for the hydrogen evolution reaction (HER) are based on metal nanoparticles (NPs). It has been shown that the localized surface plasmon resonance (LSPR) excitation in plasmonic NPs can be harvested to accelerate a variety of molecular transformations. This enables the utilization of visible light as an energy input to enhance HER performances. However, most metals that are active toward the HER do not support LSPR excitation in the visible or near-IR ranges. We describe herein the synthesis of gold-rhodium core-shell nanoflowers (Au@Rh NFs) that are composed of a core made up of spherical Au NPs and shells containing Rh branches. The Au@Rh NFs were employed as a model system to probe how the LSPR excitation from Au NPs can lead to an enhancement in the HER performance for Rh. Our data demonstrate that the LSPR excitation at 533 nm (and 405 nm) leads to an improvement in the HER performance of Rh, which depends on the morphological features of the Au Rh NFs, offering opportunities for optimization of the catalytic performance. Control experiments indicate that this improvement originates from the stronger interaction of Au@Rh NFs with H2O molecules at the surface, leading to an icelike configuration, which facilitated the HER under LSPR excitation.
Subject: gold
rhodium
nanoflowers
plasmonic catalysis
hydrogen evolution reaction
WORK FUNCTION
ELECTROCHEMICAL-BEHAVIOR
POLYCRYSTALLINE RHODIUM
HIGHLY EFFICIENT
SINGLE-PARTICLE
ZERO CHARGE
AU NANORODS
WATER
NANOPARTICLES
SOLAR
116 Chemical sciences
Peer reviewed: Yes
Rights: cc_by
Usage restriction: openAccess
Self-archived version: publishedVersion


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